The most obvious way to trim resources is to remove nodes from the cluster. Sometimes, nodes may need to be removed after crashing on their own. In a cloud environment built with efficient DevOps processes, it is often much faster to re-provision a troublesome node than it is to spend time resurrecting it. There are two nodetool commands used to remove nodes from a cluster: nodetool decommission and nodetool removenode. These will be discussed based on their use cases (live node versus dead node) in the following section.
Removing nodes from a cluster
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